dispatch: move part of callcatch to scmutil Per discussion at 39149b6036e6 [1], we need "callcatch" in worker.py. Move it to scmutil.py to avoid cycles. Note that dispatch's callcatch handles some additional high-level exceptions related to config parsing, and commands. Moving them to scmutil will make scmutil depend on "commands" or require "_formatparse" and "_getsimilar" (and "difflib") to be moved as well. In the worker use-case, it is forked when config and commands are fully loaded. So it should not care about those exceptions. [1]: https://www.mercurial-scm.org/pipermail/mercurial-devel/2016-August/087116.html

Mercurial
=========

Mercurial is a fast, easy to use, distributed revision control tool
for software developers.

Basic install:

 $ make            # see install targets
 $ make install    # do a system-wide install
 $ hg debuginstall # sanity-check setup
 $ hg              # see help

Running without installing:

 $ make local      # build for inplace usage
 $ ./hg --version  # should show the latest version

See https://mercurial-scm.org/ for detailed installation
instructions, platform-specific notes, and Mercurial user information.